According to rounding rules for addition the sum of 27.1, 34.538, and 37.68 is
1 answer:
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Answer:
<h2>2.49 g/cm³</h2>Explanation:
The density of a substance can be found by using the formula
From the question we have
We have the final answer as
<h3>2.49 g/cm³</h3>Hope this helps you
Explanation:
Relation between pH and concentration of hydrogen ions is as follows.
pH =
So, it means that an increase in the value of pH will show that there occurs a decrease in concentration of hydrogen ions.
Therefore, the solution becomes basic in nature.
On the other hand, a decrease in the value of pH will show that there occurs an increase in the concentration of hydrogen ions.
Therefore, the solution becomes more acidic in nature.
Hence, if the pH of a solution is decreased from pH 8 to pH 6 it means that the concentration of hydrogen ions has increased in the solution.
The given question is incomplete. The complete question is given here :
The equilibrium constant for the reaction is M.
This value indicates that
A. is a stronger base than
B. HCN is a stronger acid than HONO
C. The conjugate base of HONO is
D. The conjugate acid of CN- is HCN
Answer: A. is a stronger base than
Explanation:
Equilibrium constant is the ratio of product of the concentration of products to the product of concentration of reactants.
When ; the reaction is product favoured.
When ; the reaction is reactant favored.
; the reaction is in equilibrium.
As, , the reaction will be product favoured and as it is a acid base reaction where
acts as acid by donating
ions and
acts as base by accepting
Thus is a strong acid thus
will be a weak conjugate base and
is a strong base which has weak
conjugate acid.
Thus the high value of K indicates that is a stronger base than